{"id":"CVE-2026-100682","state":"PUBLISHED","title":"Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink","description":"Budibase Server before 3.45.0 contains an arbitrary file write vulnerability in the PWA icon upload endpoint that extracts user-supplied ZIP archives without proper symlink validation. Attackers with BUILDER role can craft a malicious ZIP with leaf symlink entries followed by duplicate file entries to write arbitrary files as root, enabling remote code execution.","publishedAt":"2026-09-26T13:23:43.846Z","updatedAt":"2026-10-08T15:21:55.126Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["budibase server"],"affected":[{"vendor":"budibase","product":"server","packageURL":"pkg:npm/%40budibase/server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.45.0","versionType":"semver"},{"version":"3.45.0","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/Budibase/budibase/security/advisories/GHSA-37r6-5jxh-vm83","https://www.vulncheck.com/advisories/budibase-server-before-3.45.0-arbitrary-file-write-via-zip-symlink"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100682.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100682","state":"PUBLISHED","datePublished":"2026-09-26T13:23:43.846Z","dateUpdated":"2026-10-08T15:21:55.126Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-26T02:36:51.810Z"},"containers":{"cna":{"title":"Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink","descriptions":[{"lang":"en","value":"Budibase Server before 3.45.0 contains an arbitrary file write vulnerability in the PWA icon upload endpoint that extracts user-supplied ZIP archives without proper symlink validation. Attackers with BUILDER role can craft a malicious ZIP with leaf symlink entries followed by duplicate file entries to write arbitrary files as root, enabling remote code execution."}],"affected":[{"vendor":"budibase","product":"server","packageURL":"pkg:npm/%40budibase/server","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.45.0","versionType":"semver"},{"version":"3.45.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/Budibase/budibase/security/advisories/GHSA-37r6-5jxh-vm83","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-37r6-5jxh-vm83)"},{"url":"https://www.vulncheck.com/advisories/budibase-server-before-3.45.0-arbitrary-file-write-via-zip-symlink","name":"VulnCheck Advisory: Budibase Server before 3.45.0 Arbitrary File Write via ZIP Symlink","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-08T15:21:55.126Z"},"datePublic":"2026-09-10T00:00:00.000Z","credits":[{"lang":"en","value":"dreamer1eh","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Budibase/budibase/security/advisories/GHSA-37r6-5jxh-vm83","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-30T15:01:12.801469Z","id":"CVE-2026-100682","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T15:01:39.218Z"}}]}}}